Add admin configuration system and M3 content automation

Admin Configuration System:
- Add registry_settings table to database schema
- Create settings.py module with 17 configurable settings across 5 categories
  (vetting, similarity, sync, moderation, rate_limits)
- Add admin API endpoints for settings management (list/get/set/reset)
- Create admin settings web UI page with tabbed categories
- Add CLI commands: cmdforge registry config list/get/set
- Wire settings page link into admin index

M3 Content Automation Scripts:
- scrutiny.py: Quality scoring with 5 weighted checks
- similarity.py: TF-IDF based duplicate detection
- vet_pipeline.py: Combined vetting with auto-decision logic
- fabric_sync.py: Scheduled Fabric pattern synchronization
- fabric-sync.service/timer: systemd units for scheduled sync

Settings available:
- Vetting thresholds (approve/reject) and check weights
- Similarity detection thresholds (duplicate/similar/related)
- Fabric sync configuration (enabled, interval, auto-approve)
- Moderation settings (require review, auto-approve private)
- Rate limiting configuration

Co-Authored-By: Claude Opus 4.5 <[email protected]>

src/cmdforge/cli/__init__.py

@@ -190,6 +190,16 @@ def main():
     p_reg_browse = registry_sub.add_parser("browse", help="Browse tools (TUI)")
     p_reg_browse.set_defaults(func=cmd_registry)
 
+    # registry config (admin settings management)
+    p_reg_config = registry_sub.add_parser("config", help="Manage registry settings (admin)")
+    p_reg_config.add_argument("action", nargs="?", choices=["list", "get", "set"], default="list",
+                              help="Action to perform (default: list)")
+    p_reg_config.add_argument("key", nargs="?", help="Setting key (for get/set)")
+    p_reg_config.add_argument("value", nargs="?", help="Setting value (for set)")
+    p_reg_config.add_argument("--json", action="store_true", help="Output as JSON")
+    p_reg_config.add_argument("--category", "-c", help="Filter by category (for list)")
+    p_reg_config.set_defaults(func=cmd_registry)
+
     # Default for registry with no subcommand
     p_registry.set_defaults(func=lambda args: cmd_registry(args) if args.registry_cmd else (setattr(args, 'registry_cmd', None) or cmd_registry(args)))